In a follow-up email, Goldman told Business Insider the two forces he believes have caused Wall Street to become unhinged: an obsession with share price, and a departure from normal securities.

"Stock ownership of investment banks as opposed to the old private partnership structure created a completely different system of incentives for firms such as Goldman, Sachs.

"In addition when bankers, including Goldman, Sachs, started peddling investment "Products" as opposed to equities and debt instruments it dramatically changed the system of compensation on the street. Whenever an account manager mentions "Products" my advice is to put your track shoes on, turn around and run as fast as you can for the exit."